title: Tachycardia in the presence of a pacemaker.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001281:Atrial Fibrillation / Q000209:etiology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D004868:Equipment Failure; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D013610:Tachycardia / Q000209:etiology*